#include <stdio.h>

int main() {
    int a = 90;
    int *b = &a;

    printf("Address of B:%d\n",b);
    printf("Content of B:%d\n",*b);
    *b = 100; // *b -> a的内存地址 -> a的值（a=97）
    printf("Modified  B context:%d\n",*b);
    printf("value of A:%d",a);
    return 0;
}